Grab-bucket.



' A. J. ALBRECHT & S. H. GONKLINL GRAB BUCKET.

APPLICATION FILED NOV. 2, 1911.

Patnted Nov. 5, 1912.

2 snnms-snpm 1'.

; "amm/zaanh 3 M y firm/FWD A. J. ALBRECHT & $.11. GONKLIN.

GRAB BUCKET. APPLICATION IILB'D NOV. 2, 1911. I 1,043,749.. Patented Nov. 5, 1912.

2 SHEETS-SHEET 2.

$5M I 5311M Wz: y

' 6 Home ne ted 49.

s rltrus ATENT ounce.

f-ALinRT JQALBRIECIHT. AND SAMUEL H. CONKLIN. or monument-1 ew JERSEY.

v GRAB-BUCKET,

Specification of Letters Patent. 1 1- N 1 1 Application filed November 1 911. Serial No, 6581131.

- To aim/mm ii "iii a4), concern:

Be it knownthat we; Amt-1m J1 rhamiccu'r HIitl'SAHUI-IL' ll. toxumx. cltlzens of the linited States'residing at. Florence, in the county of; Burlmgtrm and Stateoffiew Jersey, have invented new and useful Improvements inGrab-'lhuekets, 111g a, specification.

Th s "lnventlon relates to of which thefollow grab i buckets,

and ithas for its objectto produce a single or double i'ope grabburket of snupleconstruct on which ma y be quickly and etl'lciently operated. z

A" further object of the invention is to produce. a-' grab .bucketwhich, in-the' act of filling thesame, shall not beliable to tilt or U turn over sidewise, therebyinterfering with the efficiency of the operation.

A still further object of the invention to produce a grab bucket which shall possess itself of" superior advantages in point of simplicity, durability and general efli'ci'ency.

With these andjothe r ends in view which will readily appear as the nature of them-- vcntion is better understood, the same con sists in the mproved construction and novel Ur-rangesnent and combination of parts which will beyhe'reinafter fully described 7 and particularlypointed out in the claims. 30

In the accompanying drawings has been illustrated'a simple and preferred form of the invention, it being, however, understood that no li1nitation. is necessarily made to the vprecise structural details therein exhibited, but that changes, alterations and modifications Within the scope of the claims may be resorted to when desired.

showing the bucket closed: and in pc'isition,-

for hoisting. Fig. 4 is an end'vieW-showing thebueket closed and in position forhoisting. Corresponding parts in the several figures are denoted by like characters of reference. The jaws 0r scoops A, B of the improved device, which are constructed of sheet metal or othersuitable material and whichincludev the curved end members 1 and the'iflat vertically disposed side members 2, may be constructed, strengthened and reinforced in any convenient manner. Said jawsor scoops are provided at their upperimier or proxuuate Corners with hinge a1,'ms 8 extending up' wardly from the sidemembers thereof, said arms being pivotally nmmrt'ed oirtllc hingev shaft 4-.fl'll1efjaWs or scodps -are provided the pivotal attaclin'ientl (lithe lower ends of links (3, the upper ends of which are pivot ally connected, in pairs, with diamctrir'al-lv opposite sides of a weight-$7 which is slidmay be Connected with the hinge shalt l; and the holdmg rope with the eye 9 ol the rod 8. v

Pivot-ally connectedwvitli the lower end of the rods by means oi a fulcrum pin 10 is one end of a link or operating lever 11, the other end ot'which is pivotallyconnected by one of the jaws,;A, near-the upper edge of the latter. The'linkor .lever 11. is provitlert with an offset 14 which is recessed to accommodate a roller lfi'journaled'upon a pin or shaft 16, said roller being adapted to conattachment (rtthe rope or the device is 6O at their upper outer corners with lugs}? Yt'or" means of a pin 12 with a casting 13' upon tact with and ride over a plate '1'? which is p suitably secured and supported-upon the links 6 that con'nectthe jaw 8 with the slide or weight 7. Suitably associated with the link 11 by means of apivotmember'ltj isa -trip book 19, the'shank of wl'lichjhasa recess 20 adapted'to be engaged by' one vend of a trip lever '21 which is fulcrumed'by mcausot a pin 22 upon the link or lever 11. i To the 'other end of the trip lever 21 is attached one end of the trip rope 23, which latter,

may be guided over. a suitably arranged pulley24=to a po nt wlthm convenient reach 0 theope'rator. Under some circumstances the trip rope is to be guided in an upward direction, and when such is the case the sliding weight 7 may be provided with an aperture 25 for the passage of the trip rope, it. being also understood that any additional guidmgmeans that may be required are to be provided forsaid rope.

v The hingeshaftt is preferably provided with an anti-friction roller 26 adapted to be engaged by the trip hook 1-9, thereby facilitatirg the operation of tripping the deyice to dump the load,

In the operation of the improved device,

the same may be used in connection with hoisting means, such a's'a crane ,or derrick of any, suitable and approved construction. When the bucket is tripped for the purpose of'dumping the ;load, the-jaws will swing outward apart from e'ach other to the position shown in Fig. 1,"the hinge arms being brought to an approximatelyhorizontal position with the axis of the hinge shaft slightly below the dead center, thereby maintaining the jaws or scoops in a separated and preventing excessive strain on'theparts' of. thedevlce. Now, when the device is lowcred-upon the pile ofinaterial from which aload is to'betaken, the jaws or scoops will engageithe material "in-a'position ready to digrinto the same. The r0d.8, is now low ered through the "slide 7, thus swinging. the

cadet the link or lever 11 carrying the trip hook in the arc of a circle until the trip hookengages theanti-friction roller onthe hinge shaft, the trip being in turn engaged by the trip lever, whereby it is held in engagementwith the roller or the hinge shaft. Draft-in an upward direction is now applied to the hoisting rod 8, thus pulling upon the hinge shaft and causing the jaws or scoops to dig into the material and to move in the direction of each other untilxthey close together, this operation being assisted and facilitated by the action of the weight or slide '7 which moves in a downward directioinpushing upon tlie'outer upper edges of the jaws and forcing the sameinto the material, thus filling the bucket.- To trip the bucket, the trip lever 2l is actuated to disengage the trip heck 1.9 from the roller 26 on the hinge shaft.- The roller 15 associated withtne link or lever l1 will now engagethe :plate .l7, takingj theweight of the-jaws'or scoops and 'theload, whileat the same time the sliding-weight '7 moves in anupward direction, thus absorbing the shock of the jaws as they swing open. to discharge the load;

The improved grab-bucket may be utilized in diflerentWays and for different purposes which will readily-suggest themselves .to-

those skilled in thetart to which itappertains. .It maybe made of any desired dimensions-according to the use for which-it is intended. hen made on a small scale t will constitute, a convenient tool for retail coal'dealers. to be utilized in loading 'agons. The device may alsobeus'ed for excavating and other similar purposes.

Having thus described theinvention, what is claimed as'new, is-:

' 1. In a device of the'chai'acter described, a pair of jaws provided at their upper inner corners with upwardly extending hinge arms, a shaft on which-said arms are pivoted, an-anti-qlriction roller on said shalt, a rigid rod constituting a hoisting'element, a slidable weight guided'tai the rod, links connecting the cutter edgcs ot' the jaws .with'the sliding weight, a link connecting one jaw with the-lower endiof thev rigid hoisting ele- -1 i e11t,- a trip hook piyotally associated with said linkand adapted to engage the anti; friction runs: on the hinge shaft. and means for actuati'hg the trip hnoki 52M111 a dcvicebt' the character doscrib' d' a pair of jaws haying hingedly connected arms, a hoisting member pivotall connected with thelhinge, .a weight slidahle upon the hoistingmember, links connecting the weight with the jaws, a lini; crmnecting the lower end ofthe hoisting member with one of the jaws. a trip device associated with said last mentioned link to engage th hinge shaft a roller associated with the trip carrying linln and a buffer plate supported in thepath of said roll-er.

In testimony whereof we ailix our signa= tnres in presence m? two witnesses.

- ALBERT J. ALBRECHT.

SAMUEL H. CONKLIN. 'Witnesses:

Cl CrL-uuiics PARKER, "FRANK S. AnsALouL 

